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OpenStudy (anonymous):
find the domain of the function: sqrt(15x^2+x-2)
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hero (hero):
15x^2 +x - 2 > 0 15x^2+6x-5x - 2 >0 3x(5x+2)-1(5x+2) >0 (5x+2)(3x-1) > 0
hero (hero):
You have to find the values, then test out the points to find which values work.
hero (hero):
|dw:1327879739913:dw|
hero (hero):
Are you going to try it out?
Directrix (directrix):
I'm thinking that the domain is the following: x </= -2/5 OR x >/= 1/3.
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hero (hero):
^ Who is this guy
hero (hero):
Directrix, I wasn't done posting the solution.
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